As an important part of the reliability design, the reliability prediction of electronic products reflects the reliability level of electronic components and the whole system. By analysis the structure and function model of a power management module, this paper separately applies the component count method and the stress analysis method to predict its reliability according to the military standard GJB/Z99C 2006. The analysis results indicate that the component count method is suitable for the

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... eliminary design phase of product due to its simplicity and less time consuming. Furthermore, the stress analysis method is better to be applied in the detailed design phase of product due to its complexity and more time consuming. Construction of Reliability Model of Power Management Module Function, Structure and Characteristics of PMM. PMM is mainly composed of hardware circuit board and LRM module in the form of encapsulation with hot plug, self-examination, control power